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Hi Invest
Selecting the first loaded bar and its price is
simple. However, your question suggests that you want the first "visible" bar
and I think this would be impossible unless you were displaying all open bars.
Unloading unwanted bars is possible but not something you'd want to do
frequently.
Cum(1)=1 identifies the first loaded bar (for
chart, exploration or system test). Finding the price associated with that bar
is as simple as
ValueWhen(1,Cum(1)=1,C).
One way that you could reference the price on a bar
that is not the first bar loaded would be to use a "date spike" to flag a
particular date, and use that to trigger the ValueWhen()
Sd:=Input("Start day" ,1,31,1);
Sm:=Input("Start
month",1,12,1);
Sy:=Input("Start year"
,1980,2010,2002);
Start:=(DayOfMonth()>=Sd AND Month()=Sm
AND
Year()=Sy) OR Year()>Sy OR (Year()=Sy
AND
Month()>Sm);
Trigger:=Start and ValueWhen(2,1,Start)=0;
ValueWhen(1,Trigger,C);
If you then wanted to spread that value across the entire chart rather than
starting at the nominated date (but still reference the price for the nominated
date) then you could change the last line to
LastValue(ValueWhen(1,Trigger,C));
There are probably a number of other ways to access prices on particular
bars, but it's difficult to try and guess what would work for you.
Regards
Roy
----- Original Message -----
Sent: Saturday, September 17, 2005 5:35 PM
Subject: [Metastockusers] Simple Code Question
Is there any way in Metastock to reference the first value in
the
visible chart?
Lets say I want to use the close of the first value
in whatever
metastock chart I'm looking at as a 'base' for an indicator I
build.
How would I get metastock to look at that first close in the
chart?
I see the "bar since" function but I may not want a fixed
value. I may
want to look at a one week chart one time and a three month
chart
another. I want the program to simply know to use the first day on
the
chart but I know not how to reference it.
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